Petrol and other measured-quantity delivery pump



July 1, 1928.

W. E. BRYAN PETROL AND OTHER MEASURED QUANTITY bELIVERY PUMP Filed March 25, 19 27 5 Sheets-Sheet l III/III all/la July 31, 1928.

w. E. BRYAN PETROL AND QTHER' MEASURED QUANTITY DELIVERY PUMP Filed March 25, 1927 '5 Sheets-Sheet 2 mwfin 5 7% m July 31, 1928. A

. w. E BRYAN rm'non AND own-m umsfinsn QUANTITY DELIVERY PUMP Filed March 25, 1927 5 Sheets-Sheet 5 a. y y .4 v 7 July 31, 1928.

w. E. BRYAN PETROL AND OTHER MEASURED QUANTITY DELIVERY PUM P 5 sheets-sheet 4 Filed March 25, 1927 M \l z a m \\1 s k W w u y \r m L I 1 k N w 0 W w m E fi QV\\\\\\ x July 31, 1928;

w. E. BRYAN PETROL AND OTHER MEASURED QUANTITY DELIVERY PUMP Filed March 25, 1 927 5 Sheets-Sheet 5 Patented July 31, 1928.

UNITED STATES WILLIAM EDWARD BRYAN, 0F .KEGWORTH, DERBY, ENGLAND, ASSIGNOR TO SLACK &

PATENT OFFICE.

FARR LIMITED, 01 KEGWORTH, DERBY, ENGLAND.

PETROL AND OTHER MEASURED-QUANTITY DELIVERY PUMP.

Application filed March 25, 1927, Serial No. 178,379, and in Great Britain November 3, 1926.

The apparatus in accordance with this in:

vention is preferably constructed in such a way as to be applicable to measured quantity delivery pumps already in existence, and consists of means for controlling the rack which is usually used for operating the piston rod controlling the delivery of the petrol or other liquid.

To enable this rack to be operatedthrough a complete stroke on the insertion of a coin into the coin-freed apparatus, an auxiliary lever is employed which utilizes the coin as an intermediate key between a sliding part or plunger operated by the auxiliary lever and a slide which operates ratchet pawls for controlling the direction of movement of the rack. The ratchet pawls are so arranged that the rack" may only be moved in one direction at one time and having commenced a movement in one direction the coin-freed apparatus ensures the con tinned movement in that direction until the rack has moved to the predetermined length of stroke.

The rack having completed its stroke, is then permitted by the pawls, which reverse their restrictive control, to return to the initial position from which the rack originally started. Thepawls therefore have teeth oppositely placed, which engage oppositely directed teeth on the rack oroppositely directed teeth on a rotary part which gears with the. rackattached to the piston ro A lost motion connection is interposed between the rack and the piston rod of the pump. or between the rotary part which is controlled by the pawls and the connection throughinterinediate gearing with therack attached to the piston .rod.

The coin is received in a receptacle in the coin-freed apparatus and slides through a channel on to two side stops which permit a com which is too small to pass, but which arrest and hold in position a coin of the correct size. A coin larger than the correct size can not be inserted in the slide. The correct sized coin having been held by the side stops, is located opposite the end of the slide which is formed with a knifeedged projection.

A plunger pp te to the knife-edf-lleidi projection has two forwardly projectin parts which, when the plunger is" presse forward by the auxiliary lever, bear against the sides of the coin, imparting pressure to,

the slide through the knife-edged projection which is met centrally in the coin, with the result that the power for moving the slide which is imparted by the auxiliary lever through the plunger tends to bend the coin, and the strength of the coin is therefore tested. Badhcoins and ordinary metal discs become bent during this test, and by bending fall into the receptacle Without permitting the auxiliary lever totransmit the necessary motion to the slide. lVashers with central holes also fail to complete the necessary connection between the plunger and the slide. i 7

If the coin inserted of the correct size and strength, the forward movement of the auxiliary lever causes the. slide as, advance. This movement of the slide removes one pawl from its notch, restrainingthe commencementof the measuring stroke of the piston rod and inserts the other pawl into its notch which allows the rack to .be moved only in the measuring direction.

'hen the slidehas been moved to its full ;distance, an additional pawl enters a' notch spring thus reversing the restrictive control of the pawls and permitting the rack to be moved in the opposite direction back tothe ordinary or initial; position ready vtor a further operation-of the piston. Although a slide, returnable' by elastic means, has been described and has been illustrated in the drawings for carrying or operating the release mechanisms, it-is obvious that a rock- 5 ing or pivoted partcould be employed for this purpose in the place of a horizontal slide. For convenience however, the term slide used in the specification includes all rocking or pivoted parts. -Two examples of apparatus of coin-freed mechanism are illustrated in the accompanying drawings, Figs. 1 to 11 relating to a com-freed apparatus which is applied directly to the rack of a pump above'the ordinary operating handle and Figs. 12, 13 and 14 show the coin-freed apparatus applied to a rotary member carried on the pump op-' crating spindle. The types of pumps are somewhat different but it will be readily understood that the coin-freed apparatus can maintain the distinctive features and be still open to modified design to suit pumps of other various ty es. e

Referring to t e drawings, Fig. 1 is a vertical section, and Fig. 2 a plan view of the coin-freed mechanism, Fig. 9 is a vertical section showing the mechanism in operative position, Fig. 10 is a similar view showing the coin-freed mechanism thrown out of. operation, and Fig. 11 is same parts.

'Figs. 12 and 13 are re 'ctively a sec.- tional elevation and plan view of the coin freed apparatus applied to a pump of dif ferent construction, and Fig. 14 is a detail view.

- Referring more particularly to 1 to 11 the coin-freed mechanism is contained within a casing A, one wall of which is' formed withan aperture A to receive the coin-which passes down a chute A 'until arrested b side stops A opposite a'tubular boss A. ithin the casing is a vertically extending rack B which is connected. at its lower-end with the pump piston rod B through a. lost motion device which permits the rack to move up or downa short dis tance before moving thepum piston rod. The provision of means for a owing a lost" motion between the rack and the pump-pie ton rod prevents the movement'of the pump [piston rod by aslight 'reciprocating ilmove c ted 1 meat of the ,0 ration of handle J. v B isshown in this example as havin enlargement B on'its upper end en o sed within a cylindrical extension B of the rack B having 11 inturned flange at its base.

Pivoted' ithin the .'A- at op 'to sides of: the rackjB are two aWIsSZ W '0 1Mia e sides of thete'eth formed in- 'des raclnand movable horizontally in the is a-slide D form a notch D in its underside and having I one end a projection D,

at its C projecting from the awls C, C

a planvie of the W I aperture A with the is shown at Fig. 9.

ted-to engage with oppositely directed.

with

other end is formed into a spindle entering a sleeve A formed in the casing. The-two pawls are drawn towards each other by a spring connection attached-to pins C and 7 0 Within the tubular mounted a site to the oss A is slidably plxunger .E; its inner end oppoife-edged projection D is so shaped as to form two points which will bear against the sides of. the coins when 75. the lunger E is pressed inwardly by the auxiliary lever F. (see Fig. 4). The lever F is pivoted to 9. lug carried by the tubular boss A.

Pivotally mounted above the slideD is an arm G having on its rear side a thickened portion G see Fig. 5. This arm acts as a catch plate, one edge of the thickened portion G forming a tooth to engage with notches in the upper side of the slide D, and

the arm is formed at oneend with a recess G suitably sha ed to engage with the pin C of the pawl when the arm G is swung upon its pivot, while the end G 'is shaped to act with a. cam action u on a pin pro-J jecting from a slidin mem er H, one end of which sliding mem er enters a recess B formed in one side of the rack B while the other end of the sliding member passes through a 'hole in the easing into the coin Upon the face of therack B vis formed a slot B within'which is adj ustably mounted a projecting stop B", which upon the rack arriving at its predetermined height, will engage with the under side of the arm G and lift it out of the notch in the upper side of the slide D,

Upon the insertion of a 'coin into the ap-. erture A it passes down the shute A and is arrested by a side stop A within the casing. The lever F is then pressed inwardly causing the two points on the inner end at the plunger E to bear upon the coin and tees it a inst the knifeedged p'ro'ection no 1g. 4). Further pressure y the lever F causes the slide D to be traversed,

the leading-edge of the slide engaging the pin C upon the pawl .C lifting it out of its notch .upon one sideg'of the rack B, while the "spring connection. to the pin 0 causes V the pawl C .to be drawn into engagement on the-opposite si rack B. Wljf'n this action has been efiected the G u notch and ocks the slide from backward movement. This position of the mechanism -The rack B and pump piston 'rod B" are now .free to be moved upwardly to: supply.

the liquid. The operator will'then, by rotation oft-he handle J and gear JE, (Figs. 7

and'8) which 'enga'geslwith teeth on the racki... 7

B, commence tofraisethe rack, -;but befO'ri'a I doing as w1ll seen f romFigs. 7 and 8,

e of the. i

n the'arm G falls into the. x20

to release the lever F to allow the handle The lever F is so arranged that when pressed inwardly it will intercept and. prevent the rotation of the pump operating handle J Upon the release of the lever F the plunger E is brought back to its outward position by means of a spring, and the coin is released and falls into a receptacle within the cas in A. I

Dpon the first upward movement of the rack the sliding member H will be pushed out of the recess 13 and will enter the coin aperture A andthus prevent any further coins being placed therein.

Itwill be seen that the rack can only move in an upward direction and upon the completion of its stroke the stop B will enga e the under side of, the thickened portion 1 of the arm G and lift it outof the notch D, thereby freeing the slide D which, by means of a spring, will be returned to its initial position, and at the same time will engage the pin C and lift the pawl C out of en-' gagement with the rack, and through the spring connection, will draw the pawl G into its notch on the opposite side of the rack.

The rack can then be lowered to its original position ready for'the next supply, and until the rack has reached its lowest position, the sliding member H will obstruct the coin slot and prevent the insertion of any coin. On the rack reaching its lowest position, the inner end of the member H will again enter the recess B in the rack and the coin slot'will be open.

The plunger E pressing forward the coin," presses from two sides only-and presses the coin against the centrally placed edge D on the slide D and in order to act as a test for the coins, the slide D is caused to resist movement to a considerable extent, so that the coin interposed must be of a certain strength in order to permit the mechanism tobe moved by the force exerted on the coin through plunger E by the lever F. Bad coins and ordinary metal discs are bent in this apparatus and fall into a receptacle, and washers do not complete the connection between the plunger and the sharpened ed e.

At Fig. 6 a means is shown for giving t e necessary resistance to movement of the slide D and for preventing undue strain being produced upon the return of the slide. The rear of the slide is recessed at D, into which a spring-pressed ball D enters and .the first movement of the slide D has to overcome the spring pressure of this ball before com ressing the return spring D.

hen it is desired to disconnect the coin freed mechanism and use the pump inthe ordinarymanner, the operator takes hold of v the arm G and draws it forward, compressing the spring G which surrounds the pivot of the arm, as will be seen at Fig. 11. The

arm G is then rocked upon its pivot until its be seen that both pawls are held disengaged from the 'rack which can be raised or lowered at will.

will enter during the traverse of the slide and slide.

Referring now to Figs. 12 to 14 the pawls C and C pivoted to the casing A, are arranged toengage a ratchet wheel K fixed on the pump operating'spindle- K the pins C and C of the'pawls C C are connected, as before described and pass through notches formed in the under side of the slide D. The spindle K carries, mounted loosely thereon a pinion L, upon one face of which are outstanding dogs L which upon rotation of the pump spindle engage with similar dogs L carried by the spindle K which enter loosely between the dogs L permit; ting a certain distance of lost motion be-. tween the s indle K and the movement of the pinion The pinion L gears through wheel L and pinionL, with a pump operating rack M. a

Fixed to the spindle K is a pinion N gearing with a wheel N the face of which car'- riesa cam surface N andan adjustable finger N Upon the rotation of the operating handle on the spindle K the wheel N will rotate and the cam' surface .N will rock a lever O which is pivoted at its lower end to prevent backward movement of the the casing A, thereby sliding a member H into the coin aperture A and preventing further coins being placed therein.

When the spindle K has been rotated to the predetermined extent, the finger N will engage the under side of an extension Gr of the rocking arm G and will lift the edge Gr out of the notch D in the slide D, into which the edge G hadentered to lock the slide in its forward position when operated by a coin, as before described.

In adapting the coin-freed mechanism to a pump of this construction, the lever F does not. obstruct the operating handle J of the pump as described in the previous example and to ensure that it shall be compulsory for the lever F to assume its outward position before the actuation of .the pump, a rod-P,

sliding in bearings in the casing, bears with its inner end against the lever O, whereb when the cam N acts to rock the lever the ,rod P will be pressed outwardly against 1 the under side of the lever F'to prevent its being held in its forward position.

H, whereby the said member is projected into the coin aperture A and prevents further admission of coins while holding the pawl C out of engagement. The pump operating spindle K can then be freely rotated in either direction.

What I claim-as my invention and desire to secure by Letters Patent is 1. Apparatus for controlling the operation of petroland other measuring quantity delivery pumps, comprising a casing attached 'to the pump frame, hearings in the casing suitable for carrying a slide, a slide carried on such bearings, coin freed means for traversing such slide, two oppositely di I rected pawls fulcrumed in the casing, abutpump ments on the slide located so as to engage the said pawls, a rack having oppositely directed teeth located between the pawls, lost motion means connecting the rackto the tpermitting the said pumptofoperate only a er the lost motion istaken up, means on the slide for rocking both pawls to en-.

gage one pawl or the other pawl with the rack when the slide is traversed, means to return the slide to its initial position when released, means on the slide to hold it at the end of its traverse, means on theme to release the slide when the said rack has arrived at the end of its stroke, thereby reversing the pawls and permitting the rack to return to its initial position and the pumps to be ready to commence a new measuring operation;

2;. Apparatus for controlling the opera tion of petrol and other measured quantity delivery pumps comprising a casing attached to the pump frame, hearings in the caslng suitable for carrying a slide, a slide earned on such bearings, coinfreed means for traversing such slide, two oppositely directed spring actuated pawls fulcrumed in the casing, abutments on the slide located so as to withdraw one or other'of the said pawls against the direction of its spring pressure, a rack having oppositely'directed 'teeth located between the pawls, meansto return the slide to its initial position when released, atrigger adapted to hold the slide at the end of its traverse, an adjustable abut,-

ment on the rack ada ted to release the slide when the said rack as arrived at. the end of its stroke, thereby reversing the pawls andpermitting the rack to return to its initial position and the pump to be rea I mence a new measuring operation.

y to com- 3. A paratus for controlling the operation 0 petrol and'other measured quantity delivery pumps, comprising a casing at.- tached to thepump frame, hearings in the casing suitable for carrying a: slide, a slide carried on such bearings, a thrustilng member operable from the exterior of 1c casing and opposite the slide, coacting'parts on the slide and on the thrusting member adapted to connect with each other on the insertion of a coin between them, two oppositely directed spring actuated pawls fulcrumed' in the casing, abutments on the slide located so as to withdraw one or other of the said pawls against the direction of its spring pressure, a rack having oppositely directed teeth located between the pawls, means to return the slide to its initial position when released, a trigger adapted to hold the slide at the end of its traverse, an adjustable abutment on the rack adapted to engage said trigger to release said slide when the said rack-has arrived at the end of its stroke,

thereby reversing the pawls and permitting the rack to return to'itsv initial position and the pump to be ready to commence a new measuring operation.

4. Apparatus for controlling the operation of petrol and other measured quant1ty d8,

livery pumps, comprising a casing attached to the pump frame, bearings in the casing adapted to carry a slide, a slide carried on such bearings, a spring pressing between a seat on the casing ahd the slide tending to press theslide to its initial position, a handoperated means outside the casing connected -with a thrusting device passingl throughand entering the casing'opposite t e end of the slide, engaging parts on the slide and on the thrusting device adapted to receive a coin between them, a rack having two sets of teeth oppositely directed said rack being connected to the piston rod of the delivery pump, two pawls oppositely directed for en: gaging one at a time with the teeth of the rack opposite to which they are located, means on the slide to actuate the pawls to release one and engage the other of said pawls to and from the rack when the slide is traversed, means for holdin the slide at the end of its traverse, means or releasing the slide onthe completion of the measuring stroke of the piston of 'the pump and to permit the said piston tobe returned to its in-.

itial' osition. I 5. pparatus. v tion of petrol and other. measured quantity ,deliver pumps, comprising a casing attached to te pump frame, hearings in the cas-' ing adapted to carry a slide, a slide carried on such bearings, a spring plressing between a seat on the casing and t e slide tending to press the slide to its initial position, a

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for controlling the operav hand-operated means outside the casing connected with a thrusting device passing through and entering the casing oppositethe end of the'slide, an engaging part on the slide located centrally opposite the thrusting device, two engaging parts. on the thrusting device adaptedto engage opposite sides of a coin when such coin is supported with its centre 0 posite the engaging part on the slide, a racE having two sets of teeth oppositely directed, .two pawls oppositely directed for engaging one at a time withthe teeth of the rack opposite to which they are located, means on the slide to actuate the pawls to release one and engage the other of the said pawls to and from the rack when the slide is traversed, means for holding the stroke of the piston of the tending to ress the slide on its initial position, a han -operated means outside the eas- 'ing connectedwith a thrusting device passing thr'ough'and entering the casing op'po-g site the'end of the slide, engaging parts. on the slide and on the thrusting device adapted to receive a coin between them, stops on the casing adapted to support the coin before it is 'ipped between the thrusting device --a.nd e slide, a rack having two sets of teeth oppositely directed said rack being connected to the piston rod of the delivery-3.

ump two pawls oppositely directed for eng ng, one at a time with the teeth of the opposite'to' which they are located,

to be returned means on the slide to actuate the pawls to release one and engage the other of said pawls to and from the rackwhen the slide is traversed, means for holding the slide at the end of its traverse, means for releasing the slide-on the completion of the measuring stroke of the iston of the pump and to permit the said piston to be returned to-its initial position.

7. A paratus for controlling the. operation 0 petroland other measured quantity delivery pumps, comprising a casing attached to the pump frame, hearings in the casing ada ted to carry a slide, a slide carried on suc bearings, a spring pressing be- I tween a seat on the casing and the slide tendingl to ress the slide to its initial position, a an --operated means outside the casing connected with" a thrusting device passing through and entering the casing opposite the nd of the slide, engagin parts on the slide "and on the thrusting evice adapted i to receive a coin between" them, stops on the casing adapted to support the coin before it is grlpped between the thrust-* ing device and the slide, a coin intercepting memberadapted to; obstruct the entrance for the com' after the piston.- of the pump has left its initial. position, a 'rack havin positely directed s'aid rack being connected to the piston rod of the delivery pump, two

pawls oppositel directed for engaging one at a time with t e teeth of the rackopposite two .sets of teeth opto which they are located, means on the slide to actuate the pawls to release one and engage the other of saidipawls to and from the rack when the slide is traversed means for holding the slide at the end of its traverse, means for releasing the slide on the completion' of the measuring stroke of the piston of the pum and to permit the said'piston H be return to its initial position. In witness whereof I have hereunto set my hand. v

i BRYAN, 

